6.1 Notation

1

In the syntax notation used in this clause, syntactic categories (nonterminals) are indicated by italic type, and literal words and character set members (terminals) by bold type. A colon (:) following a nonterminal introduces its definition. Alternative definitions are listed on separate lines, except when prefaced by the words “one of”. An optional symbol is indicated by the subscript “opt”, so that

{ expressionopt }

indicates an optional expression enclosed in braces.

2

When syntactic categories are referred to in the main text, they are not italicized and words are separated by spaces instead of hyphens.

3

A summary of the language syntax is given in annex A.